Diamond necklace



FIG. 1 is a top plan view of a diamond necklace showing my new design portions of the continuous neckchain being broken away for convenience of illustration;

FIG. 2 is a side elevational view thereof; and

FIG. 3 is a sectional view as seen from the plane 3--3 in FIG. 2. 

The ornamental design for a diamond necklace, substantially as shown and described. 